No seeking is involved: the clear Germanic cognates make it
perfectly obvious that the word is from a Proto-Germanic
Class VI strong verb *hlaþaną.
>
Or better *xlaθanã using IPA conventions. I disagree with the Indo-Europeanists' "tradition" (I'd rather call it vice) of using non-IPA symbols such as the "thorn" as well as the Greek alphabet for transcribing Ancient Greek.