Hadith 21501

حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ ، عَنْ شُعْبَةَ ، حَدَّثَنَا أَبُو عِمْرَانَ الْجَوْنِيُّ ، عَنْ عَبْدِ اللَّهِ بْنِ الصَّامِتِ ، قَالَ : لَمَّا قَدِمَ أَبُو ذَرٍّ عَلَى عُثْمَانَ مِنَ الشَّامِ ، فَقَالَ : أَمَرَنِي خَلِيلِي صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِثَلَاثٍ " اسْمَعْ وَأَطِعْ وَلَوْ عَبْدًا مُجَدَّعَ الْأَطْرَافِ ، وَإِذَا صَنَعْتَ مَرَقَةً فَأَكْثِرْ مَاءَهَا ، ثُمَّ انْظُرْ أَهْلَ بَيْتٍ مِنْ جِيرَتِكَ فَأَصِبْهُمْ مِنْهَا بِمَعْرُوفٍ ، وَصَلِّ الصَّلَاةَ لِوَقْتِهَا ، فَإِنْ وَجَدْتَ الْإِمَامَ قَدْ صَلَّى فَقَدْ أَحْرَزْتَ صَلَاتَكَ ، وَإِلَّا فَهِيَ نَافِلَةٌ " .
It is narrated from Hazrat Abu Dharr (may Allah be pleased with him) that my beloved friend (peace and blessings be upon him) advised me regarding three things: (1) Listen and obey, even if a slave with cut-off limbs is appointed as your ruler; (2) When you prepare broth, increase its water, then look to your neighbors and deliver some of it to them in a good manner; (3) And perform the prayer at its appointed time, and when you see the imam has finished the prayer, then you have also completed your prayer, otherwise it will be considered a voluntary prayer.
Hadith Reference مسند احمد / مسند الأنصار رضي الله عنهم / 21501
Hadith Grading حکم دارالسلام: إسناده صحيح، م: 648