Abdullah bin Umar reported,

When the Messenger of Allah ﷺ returned from a military expedition, hajj, or umrah, he would begin by saying "Allahu Akbar" three times, then say, "There is no god but Allah alone, with no partner. To Him belongs the dominion, to Him belongs all praise, and He has power over all things. We return as repentant servants, worshipping and prostrating to our Lord, offering Him praise. Allah has fulfilled His promise, granted victory to His servant, and alone defeated the confederates."

Ahmad 5830

Sahih

حدثنا عتاب بن زياد حدثنا عبد الله يعني ابن مبارك أخبرنا موسى بن عقبة عن سالم ونافع

عن عبد الله

أن رسول الله ﷺ كان إذا قفل من الغزو أو الحج أو العمرة يبدأ فيكبر ثلاث مرار ثم يقول لا إله إلا الله وحده لا شريك له له الملك وله الحمد وهو على كل شيء قدير آيبون تائبون عابدون ساجدون لربنا حامدون صدق الله وعده ونصر عبده وهزم الأحزاب وحده

أحمد 5830صحيح
Contents
Reference
Commentary
Ayat
Collection
Musnad Ahmad
Book
Abdullah bin Umar
Numbering
Darussalam 5830
Ahmad 5830