Shiva Purana
ये भस्मधारिणं दृष्ट्वा नराः कुर्वंति ताडनम् । तेषां चंडालतो जन्म ब्रह्मन्नूह्यं विपश्चिता ३२ ।
Those who begin to strike on seeing a person who has applied the ash are reborn of Cāṇḍāla parents. O holy one, this can be guessed by the wise.
english translation
ye bhasmadhAriNaM dRSTvA narAH kurvaMti tADanam । teSAM caMDAlato janma brahmannUhyaM vipazcitA 32 ।
hk transliteration by Sanscript