The Brauns were negotiating the purchase of a house. However, the roof leaked in numerous places and needed a thorough sealing. The owner did not want to invest money in the repair unless he had a definite buyer, whereas Mr. Braun was equally insistent he would not buy until the roof was repaired satisfactorily.

“Perhaps we can close the sale,” suggested the seller, “and add a clause in the sales contract making the purchase conditional upon repairing the roof within three months?”

“That’s acceptable to us,” said Mr. Braun.

The lawyers drafted a sales contract, including this clause: “The seller agrees to repair the roof and seal it within three months; both parties acknowledge that this is a material term of the sales contract.”

Mr. and Mrs. Braun told their children that they had purchased a house, but it was not final because they had stipulated that the roof be repaired first.

“We just recently discussed with Rabbi Tzedek the proper formulation of legal stipulations,” said their son Benjy.

“That’s right,” said Mr. Braun. “He said that we derive from the stipulations of bnei Gad and Reuven four criteria: It is necessary to spell out both sides of the stipulation — if yes… if no... (tnai kaful); the positive, ‘yes,’ side must be stated first (hen kodem l’lav); the conditional ‘if’ clause must precede the transaction statement (tnai kodem l’maaseh); and the condition must be something possible to fulfill (davar she’efshar l’kaymo).

“So I guess,” mused Mr. Braun, “that the proper formulation is: ‘If the roof is repaired within three months, the sale is valid; if not repaired, the sale is void.’”

That Shabbos, Mr. Braun approached Rabbi Tzedek. “You mentioned that the proper formulation of stipulations is essential for marriage and divorce agreements. Is this formulation also necessary for monetary stipulations?”

Rabbi Tzedek answered, “There is a major dispute on this issue among the Rishonim. The generally accepted halachic ruling is to make reference to it in real estate transactions, although it is likely not necessary nowadays when drafting a legal contract.”

“Logic would require it for monetary stipulations,” observed Mr. Braun, “since we derive this formulation from the stipulation regarding Gad and Reuven’s heritage on the eastern bank of the Jordan!”

“Indeed, the Shulchan Aruch, citing the Rambam (Hil. Ishus 6:14) and Tur, requires this formulation for monetary matters as well,” replied Rabbi Tzedek. “However, the Raavad and other Rishonim disagree and maintain that this formulation is not required for monetary issues where clear understandings generally suffice (C.M. 207:1; 241:12; Gra 241:36).

“In addition,” continued Rabbi Tzedek, “the Rosh rules that it suffices to state in the contract that the stipulations are ‘in accordance with the stipulations of bnei Gad and Reuven,’ or, ‘in accordance with the institutions of our Sages’ (E.H. 38:3; C.M. 241:12).”

“How do the other Rishonim square their opinion with the case of bnei Gad and Reuven?” asked Mr. Braun.

“They understand that, in principle, we do not follow Rabi Meir, who requires this formulation,” answered Rabbi Tzedek. “We only consider his opinion in marriage and divorce stipulations because of their severity (Aruch Hashulchan 207:4).”

“What did you say is the accepted ruling?” asked Mr. Braun.

“The Nesivos (207:1) and other Acharonim cite the practice that we do not require this formulation for movable items,” said Rabbi Tzedek, “and to write ‘in accordance with the stipulation of bnei Gad and bnei Reuven’ for real estate.

“Some authorities suggest, though, that a legal contract nowadays does not require this formulation even for real estate transactions. They maintain that this formulation is needed to strengthen the stipulation and indicate that it is meant sincerely; in a recognized legal contract, the stipulation is clearly meant sincerely.

“In addition, since nowadays the practice is not to use this formulation, but to rely on the legal requirements, it is comparable to the practice mentioned by the Nesivos. Thirdly, perhaps the agreements formulated in a legal contract are binding on the basis of situmta, common commercial practice (Tel Talpiot, vol. 62, pp. 306-309).”