SB 10.38.26

tad-darśanāhlāda-vivṛddha-sambhramaḥ
 premṇordhva-romāśru-kalākulekṣaṇaḥ
rathād avaskandya sa teṣv aceṣṭata
 prabhor amūny aṅghri-rajāṁsy aho iti
Synonyms: 
tat — of Lord Kṛṣṇa’s footprints; darśana — from the sight; āhlāda — by the ecstasy; vivṛddha — greatly increased; sambhramaḥ — whose agitation; premṇā — out of pure love; ūrdhva — standing erect; roma — whose bodily hairs; aśru-kalā — with teardrops; ākula — filled; īkṣaṇaḥ — whose eyes; rathāt — from the chariot; avaskandya — getting down; saḥ — he, Akrūra; teṣu — among those (footprints); aceṣṭata — rolled about; prabhoḥ — of my master; amūni — these; aṅghri — from the feet; rajāṁsi — particles of dust; aho — ah; iti — with these words.
Translation: 
Increasingly agitated by ecstasy at seeing the Lord’s footprints, his bodily hairs standing on end because of his pure love, and his eyes filled with tears, Akrūra jumped down from his chariot and began rolling about among those footprints, exclaiming, “Ah, this is the dust from my master’s feet!”