DeFi Lending and Liquidity Pools

Short answer: (1) DeFi 'lending' — coins lent for a fixed/variable extra return — is stipulated increase on a loan, i.e. riba: impermissible. (2) Liquidity pools / yield farming: rulings differ by structure — genuine fee-sharing partnerships are a separate discussion, but most pools involve interest-bearing lending protocols, the gharar of impermanent loss and haram token rewards, so the cautious evidence-based position is abstention. (3) Zakat: coins you deposited remain your wealth — pay 2.5% of the withdrawable value on your zakat day; the interest portion stays outside the reckoning (it may not be kept at all). Evidence: Quran 2:275; Quran 2:279 (your principal is yours); Sahih Muslim 1598 (the curse on all parties to riba); Sahih Muslim 1513 (gharar). Application: For interest-like returns already accrued, keep your principal coins and give the rest away without expecting reward (not as zakat). Seek genuinely risk-sharing halal alternatives. For complex individual cases, consult a qualified scholar.