The Lollipop Seller's Fear Of Oaths

[Follow-up to the tale of Rahamim the pious lollipop seller.] While there is no explicit and unambiguous Talmudic / Halachic injunction against taking a true oath, there is clear disapproval expressed in the tradition, as well as evidence that pious Jews would commonly avoid taking honest oaths even at the cost of significant sums of …