Question: What is your advice to the one who has performed the obligatory (first) Hajj?

Response: My advice is that he should fear Allaah (and be aware of Him) in performing all that which Allaah has obligated upon him in terms of other acts of worship such as salaah, zakaah, fasting, honouring the parents, enjoining family ties and being good to the creation (of Allaah) and to the animals under ones ownership and other than this from that which Allaah has commanded with. That which encompasses all of this is the statement of Allaah:

{Verily, Allaah enjoins al-'Adl (justice) and al-Ihsaan (being patient in performing one's duties to Allaah), and giving (help) to kith and kin: and forbids al-Fahshaa. (all evil deeds), and al-Munkar (all that is prohibited), and al-Baghee (all kinds of oppression),

He admonishes you, that you may take heed. And fulfill the Covenant of Allaah (Bay'ah: pledge for Islaam) when you have covenanted, and break not the oaths after you have confirmed them, and indeed you have appointed Allaah your surety.

Verily! Allaah knows what you do}, [Soorah an-Nahl, Aayah's 90-91].

Shaykh Ibn 'Uthaymeen

Daleel al-Akhtaa.a yaqa'a feehaa al-Haaj wal-Mu'tamir wat-tahdtheer minhaa - Page 117

ref: http://www.fatwa-online.com/fataawa/worship/hajjandumrah/haj016/0000303_2.htm