General Behavior (Kitab Al-Adab)
Sunan Abī Dāwūd 5169
إِنَّ الْعَبْدَ إِذَا نَصَحَ لِسَيِّدِهِ وَأَحْسَنَ عِبَادَةَ اللَّهِ فَلَهُ أَجْرُهُ مَرَّتَيْنِ
inna al-ʿabda idhā naṣaḥa lisayyidihi wa-aḥsana ʿibādaha-Llāh falah ajruhu marratayni
Transliteration generated from the Arabic vowel marks
The full narration
‘Abd Allah b. ‘Umar reported the Messenger of Allah (May peace be upon him) as saying:when a slave acts sincerely towards his master and worship Allah well, he will have a double reward
Source
Sunan Abī Dāwūd · 5169
Ṣaḥīḥ
- Sahih
- Sahih
- Sahih Bukhari (2546) Sahih Muslim (1664)