Does forbidden speech nullify ablution (Wudu)?

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Speech, other than apostasy (Riddah), such as lying, backbiting, obscene talk, and slander, does not invalidate ablution. This is the established position, affirmed by Ahmad. Scholars whose opinions are recorded from the major cities are in agreement that slander, false speech, lying, and backbiting do not necessitate purification (Wudu) nor do they invalidate existing ablution. The foundational evidence is the Prophet's statement: Whoever swears by Al-Lat and Al-'Uzza should say, 'There is no god but Allah,' without any command for ablution following this oath.