Hisn al-Muslim
Three characteristics, whoever combines them, has completed his faith: to be just, to spread greetings to all people and to spend (charitably) out of the little you have. Reference: Al-Bukhari, cf. Al-Asqalani, Fathul-Bari 1/82 as a statement of the Companion 'Ammar (RA).
ثَلاَثٌ مَنْ جَمَعَهُنَّ فَقَدْ جَمَعَ الْإِيمَانَ: الْإِنْصَافُ مِنْ نَفْسِكَ، وَبَذْلُ السَّلاَمِ لِلْعَالَمِ، وَالْإِنْفَاقُ مِنَ الإِقْتَارِ
Reference