Sayyiduna Amr bin Umayyah al-Damri (may Allah be pleased with him) relates that he said: "O Messenger of Allah! Shall I leave my mount untied and put my trust (in Allah)?" The Prophet (peace and blessings be upon him) said: "Rather, tie it and then put your trust (in Allah)!"
Al-Tabarani recorded it through various chains, and the narrators of one of them are the narrators of the Sahih, except Ya'qub bin Abdullah bin Amr bin Umayyah, and he is thiqah (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الزهد / 18187