SB 10.63.49

catvāro ’sya bhujāḥ śiṣṭā
 bhaviṣyaty ajarāmaraḥ
pārṣada-mukhyo bhavato
 na kutaścid-bhayo ’suraḥ
Synonyms: 
catvāraḥ — four; asya — his; bhujāḥ — arms; śiṣṭāḥ — remaining; bhaviṣyati — will be; ajara — unaging; amaraḥ — and immortal; pārṣada — an associate; mukhyaḥ — principal; bhavataḥ — of yourself; na kutaścit-bhayaḥ — having no fear on any account; asuraḥ — the demon.
Translation: 
This demon, who still has four arms, will be immune to old age and death, and he will serve as one of your principal attendants. Thus he will have nothing to fear on any account.