Tobit 3:8
7 On the same day, at Ecbatana in Media, it also happened that Sarah, the daughter of Raguel, was reproached by one of her father's maids. 8 For she had been married to seven husbands, and the wicked demon Asmodeus had killed each of them before they had been with her as is customary for wives. So the maid said to her, "You are the one who kills your husbands! See, you have already been married to seven husbands and have not borne the name of a single one of them. 9 Why do you beat us? Because your husbands are dead? Go with them! May we never see a son or daughter of yours!"
Testament of Solomon 22
22 On hearing this, I, Solomon, tightened his bonds and commanded him to be flogged with ox-hide strips, demanding that he humbly tell me his name and his business. He replied, 'I am Asmodeus among mortals, and my business is to plot against the newlyweds, so that they may not consummate their marriage. I sever them completely through various calamities and drain the beauty of virgin women, turning their hearts away.'
Notes and References
"... This reconstructed etiology explains how it is that the giants could become so openly identified as demons at a later stage ... see the Testament of Solomon 5:3 and 17:1. In 5:3 (within the section 5:1–11), the author reinterprets the demon Asmodaeus – this is a deliberate reference to the Book of Tobit that follows the longer recension (compare Codex Sinaiticus at 3:7–8, 17; 6:14–15, 17; 8:2–3; 12:15) – one born from a human mother and an angel. In the latter text (in the passage 17:1–5) the demonic power thwarted by Jesus (in an allusion to Mark 5:3) is identified as having been one of the giants who died in the internecine conflicts (compare 1 Enoch 7:5 and 10:12). Similarly, Pseudo-Clementine Homilies 8.12–18 refers to the giants, which are designed as both “bastards” and “demons” in the ante-diluvian phase of their existence. Here they are said to have survived the Flood in the form of disembodied “large souls” whose post-diluvian activities are proscribed through “a certain righteous law” given them through an angel ..."
Stuckenbruck, Loren T. The Myth of Rebellious Angels: Studies in Second Temple Judaism and New Testament Texts (pp. 15-16) Mohr Siebeck, 2014