Garudapurana 1.65.107

1.65.107

na nimnaṃ nonnataṃ strīṇāṃ bhavetkaratalaṃ śubham /
rekhānvitaṃ tvavidhavāṃ kuryātsaṃbhoginīṃ striyam /
rekhā yā maṇibandhotthā gatā madhyāṅguliṃ kare //

the palm of women that is neither depressed nor elevated is auspicious. / Marked with lines, it makes a woman not a widow and rich in enjoyments. / The line that rises from the wrist and goes to the middle finger on the hand,