Is the pledge of allegiance valid between people for the purpose of abandoning sins?

Question:
Is the pledge of allegiance to abandon forbidden acts valid for anyone other than the Messenger of Allah (peace and blessings be upon him)?

Answer:
Yes, the fact that they do not disobey Allah is good.
Q: I mean, if two people pledge to each other to abandon sins?
A: No, that is with the one in authority; the pledge of allegiance is with the one in authority.
Q: I mean, if they pledge to each other between themselves to abandon sins?
A: No, there is no need for a pledge of allegiance; they should advise one another, counsel each other, and repent.