Jami` at-Tirmidhi 2517
جامع الترمذي#2517HasanAnas bin Malik narrated that a man said:"O Messenger of Allah! Shall I tie it and rely(upon Allah), or leave it loose and rely(upon Allah)?" He said: "Tie it and rely(upon Allah)." Other chains report similar narrations
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirHasan
Al-AlbaniHasan
Zubair Ali ZaiHasan
In-book reference: 37:103