Shiva Purana
अयने विषुवे चैव ग्रहणेषु विशेषतः ॥ कर्तव्या महती पूजा ह्यधिका वापि शक्तितः ॥ ३ ॥
Especially during the eclipses of the moon and the equinox. Great worship should be performed even if it is more than one can afford.
english translation
ayane viSuve caiva grahaNeSu vizeSataH ॥ kartavyA mahatI pUjA hyadhikA vApi zaktitaH ॥ 3 ॥
hk transliteration by Sanscript