Mutakhir, Ibnu, and Dedi Sunardi. “Fiqh Muamalah Review of Airdrop Business Activities Using Digital Assets Cryptocurrency”. Al-Muamalat: Jurnal Ekonomi Syariah, vol. 11, no. 1, Jan. 2024, pp. 48-58, doi:10.15575/am.v11i1.31842.