Shiva Purana
तस्मात्सर्वप्रयत्नेन पतितो ऽपि यजेच्छिवम् ॥ भक्तश्चेन्नापरः कश्चिद्भिक्षाहारो जितेंद्रियः ॥ ३ ॥
Hence by all means let even a fallen man worship Śiva sustaining himself on alms and conquering the sense-organs. This he shall do if he is a devotee and none else.
english translation
tasmAtsarvaprayatnena patito 'pi yajecchivam ॥ bhaktazcennAparaH kazcidbhikSAhAro jiteMdriyaH ॥ 3 ॥
hk transliteration by Sanscript