What is Certainty? – Ibn Mas’ood (radiyallaahu-anhu)
Ibn Mas’ood (radiyallaahu-anhu) said:
Certainty is that you neither please the people to displease Allaah nor envy anyone for the provision Allaah has given him, nor blame anyone for what Allaah has not given you; because Allaah’s provision will neither come to you through the eagerness of the one [who wants it to come to you] nor will it be repelled by the dislike of the one who dislikes that [it should be given to you].
[Jaami-ul Uloom Wal-Hikam: page: 308]