Shiva Purana
दीपसर्षपदानाच्च अपस्मारक्षयो भवेत् । कृत्तिकासोमवारेषु शिवस्य यजनं नृणाम् ५१ ।
By performing worship of Lord Shiva on the days of Kṛttikā and Soma-vāra (Monday), using offerings like oil lamps (dīpa) and sesame seeds (sarṣapa), one can be relieved of apasmāra (forgetfulness or mental disorders) and attain overall well-being.
english translation
dIpasarSapadAnAcca apasmArakSayo bhavet । kRttikAsomavAreSu zivasya yajanaM nRNAm 51 ।
hk transliteration by Sanscript