Allâh's Messenger (ﷺ) ordered us to do seven things and forbade us from doing seven other things. He ordered us:

1. To follow the funeral procession,
2. To visit the sick,
3. To accept invitations,
4. To help the oppressed,
5. To fulfil the oaths,
6. To return the greetings and
7. To respond to a sneezer (saying, Yarhamu-ka-Allâh -- may Allah be Merciful to you, provided the sneezer says Al-ḥamdu-lillâh-all the praises are for Allâh,).

He forbade us to use silver utensils (and dishes) and to wear golden rings, silk (clothes), (pure silk cloth), Qassi and Istabraq (two kinds of silk cloths). [2:331-O.B.]