This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
擵 is a rare character combining 扌 (hand) with 摩, which likely contributes sound and possibly a meaning related to rubbing or polishing. The exact historical development is uncertain.
The hand radical 扌 beside 摩 suggests an action done by hand, but the specific meaning is unclear.
For マ, imagine a hand rubbing a magic lamp: ma -> マ, like the first sound of 'magic'.