Claim

Mulayam Singh Yadav was also a victim of Congress's misuse of power — his governments were toppled and he was kept in jail for 18 months.

“मुलायम सिंह जी भी उसके शिकार हुए हैं। उनकी भी सरकारों पे गाज गिरी है। 18 महीने जेल में सड़ाए गए।”

Rationale

The core of the claim is substantiated: Mulayam Singh Yadav was jailed during the 1975-77 Emergency declared by Indira Gandhi's Congress government, and his 1990-91 UP government fell when the Congress withdrew its support in April 1991 — both fitting the 'victim of Congress's misuse of power' framing. The jail figure is a minor overstatement/rounding: reputable sources consistently report roughly 19 months in detention, not the 18 months stated. Given the substantive accuracy of the imprisonment and government-toppling claims, with only a small numerical discrepancy, the statement is broadly accurate.

Evidence

• https://en.wikipedia.org/wiki/Mulayam_Singh_Yadav Mulayam Singh Yadav was detained during the 1975-77 Emergency imposed by Indira Gandhi's Congress government; his second stint as UP CM (1990-91) ended in April 1991 when the Congress (INC) withdrew its support, toppling his government. ✓ reachable · archived
• https://www.dynamitenews.com/story/rip-mulayam-singh-yadav-dominated-countrys-political-life-for-6-decades-was-jailed-for-19-months-during-emergency Reports he was jailed for 19 months during the Emergency under Indira Gandhi's Congress government — close to the '18 months' stated in the claim. ✓ reachable · archived
• https://www.britannica.com/biography/Mulayam-Singh-Yadav Confirms his imprisonment during the Emergency and his rise afterward, becoming a UP minister in 1977 following his release. ✗ unreachable · HTTP 403