Mishkat al-Masabih 10 The Rites of Pilgrimage كتاب المناسك 2

وَعَنْهُ قَالَ: سُئِلَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: أَيُّ الْعَمَلِ أَفْضَلُ؟ قَالَ: «إِيمَانٌ بِاللَّهِ وَرَسُولِهِ» قِيلَ: ثُمَّ مَاذَا؟ قَالَ: «الْجِهَادُ فِي سَبِيلِ اللَّهِ» . قِيلَ: ثُمَّ مَاذَا؟ قَالَ: «حَجٌّ مبرورٌ»

He said that God’s messenger was asked what action was most excellent and replied that it was faith in God and His messenger. He was asked what came next and replied that it was jihad in God’s path. He was asked what came next and replied that it was a pilgrimage which was accepted. Bukhari and Muslim.