Brihat Samhita
ग्रस्ते क्रमान्निमित्तैः पुनर्ग्रहो मासषट्कपरिवृद्ध्या । पवनौल्कापातरजः क्षितिकम्पतमोअशनिनिपातैः ॥ ५-६३ ॥
If during the eclipse, there should occur portents, meteoric fails, dust storms, earthquakes, universal darkness or thunderbolt, the eclipse will re-occur after six, twelve, eighteen, twenty-four, thirty, or thirty-six months respectively.
english translation
graste kramAnnimittaiH punargraho mAsaSaTkaparivRddhyA । pavanaulkApAtarajaH kSitikampatamoazaninipAtaiH ॥ 5-63 ॥
hk transliteration by Sanscript