وَعَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «انْتَدَبَ اللَّهُ لِمَنْ خَرَجَ فِي سَبِيلِهِ لَا يُخْرِجُهُ إِلَّا إِيمَانٌ بِي وَتَصْدِيقٌ بِرُسُلِي أَنْ أَرْجِعَهُ بِمَا نَالَ مِنْ أَجْرٍ وَغَنِيمَةٍ أَوْ أُدْخِلَهُ الْجَنَّةَ»
He reported God’s Messenger as saying, “God answers the prayer for forgiveness of him who goes out in His path, being led to do so by nothing but faith in Him and belief in His Messengers, promising to bring him back with the reward or booty he obtains, or bring him into paradise.”
Mishkat al-Masabih 3629, Book 20, Jihad, Hadith 3. 1 min read