Narrated Zayd ibn Arqam:
The Prophet (ﷺ) said: When a man makes a promise to his brother with the intention of fulfilling it and does not do so, and does not come at the appointed time, he is guilty of no sin.
Narrated Zaid bin Arqam:
that the Messenger of Allah (ﷺ) said: "Whenever a man makes a promise and he intends to fulfill it, but he does not fulfill it, then there is no burden upon him."