Hadithcore
Mishkat al-Masabih, 2436

‘Abdallah al-Khatmi told that when God’s messenger wanted to commend an army [to God’s care] he said, “I entrust to God your religion, what you are responsible for, and your final deeds.” Abu Dawud transmitted it.

وَعَنْ عَبْدِ اللَّهِ الْخَطْمِيِّ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا أَرَادَ أَنْ يَسْتَوْدِعَ الْجَيْشَ قَالَ: «أَسْتَوْدِعُ اللَّهَ دِينَكُمْ وأمانتكم وخواتيم أَعمالكُم» . رَوَاهُ أَبُو دَاوُد

References1 variant
In-Book Reference
Book 9, Hadith 205