Kitto's Popular Cyclopedia of Biblial Literature
Abi´hu (Father of him), the second of the sons of Aaron, who, with his brothers Nadab, Eleazer, and Ithamar, was set apart and consecrated for the priesthood (Exodus 28:1). He and his brother Nadab having presumed to offer incense in censers filled with 'strange' or common fire, they were instantly struck dead by lightning, and were taken away and buried in their clothes without the camp. As immediately after the record of this transaction comes a prohibition of wine or strong drink to the priests on duty at the tabernacle, it is not unfairly surmised that they were intoxicated when they committed this serious error in their ministrations (Leviticus 10:1-11).
Kitto, John, ed. Entry for 'Abihu'. "Kitto's Popular Cyclopedia of Biblial Literature". https://www.studylight.org/encyclopedias/eng/kbe/a/abihu.html.