Hikam 32 & 34, page 151

Shaykh Abdur-Rahman discusses how the seeker can adorn themselves with the virtuous attributes of the angels and the rightous believers such as obedience,humility, serenity, patience. However, in order for them to gain these qualities the evil attributes of their physical limbs (cursing, back-biting, etc.) and the evils of their heart (pride, envy, love for fame, etc.) must be removed. Sincerity is only then achieved. The seeker will now be able to reach divine proximity and respond truthfully to the call of His Master, thus being worthy to be called a true servant.