Normally both ears are wiped together with both hands. If only one hand is usable, the right ear is wiped before the left to preserve the right-first preference.
This concerns the preferred manner, not a change in the required acts of wudu.
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Right-Side Preference When Wiping the Ears
Recommended Acts of Wudu and Juristic Differences
Normally both ears are wiped together with both hands. If only one hand is usable, the right ear is wiped before the left to preserve the right-first preference.
This concerns the preferred manner, not a change in the required acts of wudu.