מלאתך ודמעך לא תאחר, בכור בניך תתן לי (משפטים כב:כח)

The passuk says “מלאתך” – a person who promises tzedakah when everything goes well for him, and also, “ודמעך” – when he cries from tzaros, and he promises tzedakah. He always needs to remember “לא תאחר” – do not procrastinate from paying your pledges because one who postpones paying what he promised, then chas v’shalom, “בכור בניך תתן לי” -as Chazal say: “בעוון נדרים בנים מתים” – one who delays paying his pledges, his children will chas v’shalom be torn away from him.