Umar ibn al-Khattab reported: The Messenger of Allah, peace and blessings be upon him, said, “If you were to rely upon Allah with reliance due to Him, He would provide for you just as He provides for the birds. They go out in the morning with empty stomachs and return full.”
Source: Sunan al-Tirmidhī 2344
Grade: Sahih (authentic) according to Al-Tirmidhi
عَنْ عُمَرَ بْنِ الْخَطَّابِ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لَوْ أَنَّكُمْ كُنْتُمْ تَوَكَّلُونَ عَلَى اللَّهِ حَقَّ تَوَكُّلِهِ لَرُزِقْتُمْ كَمَا يُرْزَقُ الطَّيْرُ تَغْدُو خِمَاصًا وَتَرُوحُ بِطَانًا
2344 سنن الترمذي كتاب الزهد باب في التوكل على الله
4/166 المحدث الترمذي خلاصة حكم المحدث صحيح في سنن الترمذي