Hadith 12 of the book of belief (faith) by Sahih al-Bukhari
(12) To feed (others) is a part of Islam
حَدَّثَنَا عَمْرُو بْنُ خَالِدٍ، قَالَ: حَدَّثَنَا اللَّيْثُ، عَنْ، يَزِيدَ، عَنْ أَبِي الْخَيْرِ، عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو رَضِيَ اللَّهُ عَنْهُمَا، أَنَّ رَجُلًا سَأَلَا النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ، أَيُّ الْإِسْلَامِ خَيْرٌ؟ قَالَ: "تُطْعِمُ الطَّعَامَ، وَتَقْرَأُ السَّلَامَ عَلَى مَنْ عَرَفْتَ وَمَنْ لَمْ تَعْرِفْ".
Sahih hadith: Narrated 'Abdullah bin 'Amr: A man asked the Prophet , What sort of deeds or (what qualities of) Islam are good? The Prophet replied, 'To feed (the poor) and greet those whom you know and those whom you do not Know (See Hadith No. 27).
Reference: Sahih al-Bukhari 1: Chapter 2, Hadith 12.
Hadith 14 of the book of belief (faith) by Sahih al-Bukhari
(14) To love the Messenger (Muhammad) is a part of faith
حَدَّثَنَا أَبُو الْيَمَانِ، قَالَ: أَخْبَرَنَا شُعَيْبٌ، قَالَ: حَدَّثَنَا أَبُو الزِّنَادِ، عَنِ الْأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ، أَن رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ، قَالَ: "فَوَالَّذِي نَفْسِي بِيَدِهِ، لَا يُؤْمِنُ أَحَدُكُمْ حَتَّى أَكُونَ أَحَبَّ إِلَيْهِ مِنْ وَالِدِهِ وَوَلَدِهِ".
Sahih hadith: Narrated Abu Huraira: Allah's Apostle said, By Him in Whose Hands my life is, none of you will have faith till he loves me more than his father and his children.
Reference: Sahih al-Bukhari 1: Chapter 2, Hadith 14.