Egypt's House of Representatives adjourned its vote on authorizing military support for Saudi Arabia to October 26, prolonging a debate that sits at the intersection of financial dependency, regional security, and domestic politics. The opposition Egyptian Social Democratic Party instructed its lawmakers to abstain, citing insufficient information on mission objectives, duration, cost, and troop risk — though the party conceded most of its roughly dozen members actually support the measure. The authorization process was triggered by Houthi attacks on Riyadh's international airport and Saudi Aramco facilities on October 10, which killed 13 people. President Abdel Fattah el-Sisi framed Egypt's posture as purely defensive — "We're talking only about defence" — after the National Defence Council gave its approval on Sunday. The constitution requires a two-thirds parliamentary majority for combat deployments abroad. The financial architecture underneath this vote is impossible to ignore. Saudi Arabia is scheduled to deposit $5.3 billion into Egypt's central bank this month, plus $267.39 million in interest. Egypt's economy depends heavily on remittances from nationals working in Saudi hydrocarbons. The Suez Canal has already lost approximately $11 billion since Houthi attacks began in the Bab al-Mandeb strait in 2023. Egypt is not being asked to help an ally — it is being asked to protect revenue streams it cannot afford to lose. Markets registered the tension immediately. Egypt's EGX30 fell early Monday on military-involvement fears before recovering to close 0.4 percent higher. HC Securities' head of research attributed recent market losses primarily to geopolitical developments, not domestic fundamentals — a polite way of saying Egypt's economic fate is being decided in Yemen, Tehran, and Washington rather than Cairo. The Grand Imam of al-Azhar urged Arab and Muslim leaders to mediate, signaling that even Egypt's religious establishment sees the risks of escalation. The delay itself is revealing: parliament is not rejecting the authorization, it is buying time to manage the optics of a vote whose outcome is largely predetermined by financial gravity. Türkiye and Pakistan have already activated the Mecca defence pact signed with Riyadh in August, raising the stakes for Egypt. Gulf studies analyst Thomas Bonnie James framed the calculus bluntly: Egypt does not want to be the regional ally that "stood aside while others defended the kingdom." The reputational cost of inaction may exceed the military cost of participation. The deeper structural question is whether Egypt's economic dependency on Saudi Arabia has reached a point where parliamentary sovereignty over military deployments is functionally ceremonial. A two-thirds vote requirement looks like a constitutional safeguard, but when the country depositing billions into your central bank is the one requesting troops, the threshold becomes a formality dressed as deliberation.