Talmud zu Schemuel I 25:38

What did you see to assert that he who dies in three days dies from the plague²⁸In the Babli (loc. cit. 26), death from the plague is within one day, based on Ez. 24:18.? Hilfai the grandson of Rebbi Abbahu said, I heard the voice of my grandfather²⁹Reading with Midraš Šemuel 23[9] סבי for רבי. The passage is quoted in Midraš Šoḥer Ṭob in the name of R. Hoshaia, in Yalquṭ Šim‘oni 2 #705 in the name of R. Ḥalaphta in the name of R. Abbahu. (Yalquṭ Šim‘oni, being a compilation of excerpts, without editorial comments, is almost a ms. witness.)
In the Babli, Roš Haššanah 18a, only the explanation of R. Ḥaggai is given but by Rav Jehudah in the name of Rav; copied in Yalquṭ Šim‘oni 2 #134. who preached (1S. 25:38): “It was like the ten days that the Eternal smote Nabal and he died.” The Holy One, praise to Him, suspended His judgment during the seven days of mourning for Samuel³⁰Noted in 1S. 25:1., that mourning for him and for the just person should not overlap; then he lingered another three days and died. Rebbi Ḥaggai in the name of Rebbi Samuel bar Naḥman: It is not written “after ten days” but “like the ten days”; The Holy One, praise to Him, suspended His judgment for ten days, like the Ten Days between New Year’s Day and the Day of Atonement³¹The Days of Repentance., that he should repent, but he did not.