Garudapurana 1.65.46

1.65.46

aṅguṣṭhamūlajaiḥ putrī syāddīrghāṅguliparvakaḥ /
dīrghāyuḥ subhagaścaiva nirdhano viralāṅguliḥ //

with lines originating at the base of the thumb, a man has sons; one with long joints on his fingers / is long-lived and fortunate; one with wide-spaced fingers is poor;