SB 10.40.28

so ’haṁ tavāṅghry-upagato ’smy asatāṁ durāpaṁ
 tac cāpy ahaṁ bhavad-anugraha īśa manye
puṁso bhaved yarhi saṁsaraṇāpavargas
 tvayy abja-nābha sad-upāsanayā matiḥ syāt
saḥ — being such; aham — I; tava — Your; aṅghri — feet; upagataḥ asmi — am approaching; asatām — for those who are impure; durāpam — impossible to attain; tat — that; ca — and; api — also; aham — I; bhavat — Your; anugrahaḥ — mercy; īśa — O Lord; manye — think; puṁsaḥ — of a person; bhavet — occurs; yarhi — when; saṁsaraṇa — of his rotation in the cycle of material existence; apavargaḥ — the cessation; tvayi — of You; abja — like a lotus; nābha — O You whose navel; sat — of pure devotees; upāsanayā — by worship; matiḥ — consciousness; syāt — develops.
Being thus fallen, I am approaching Your feet for shelter, O Lord, because although the impure can never attain Your feet, I think it is nevertheless possible by Your mercy. Only when one’s material life has ceased, O lotus-naveled Lord, can one develop consciousness of You by serving Your pure devotees.