Sn 2.1: What is meant by an "eighth grasping (ādiyanti)"?

Sn 2.1 has been translated as follows: > Ye ariyasaccāni vibhāvayanti, Gambhīrapaññena sudesitāni; Kiñcāpi te > honti bhusaṃ pamattā, Na te **bhavaṃ** **aṭṭhamam** ** href="https://suttacentral.net/define/%C4%81diyati">ādiyanti**; > Idampi saṅghe ratanaṃ paṇītaṃ, Etena saccena suvatthi hotu > > Who clearly comprehend these Noble Truths well-taught by him of wisdom > fathomless, however heedless be they afterwards upon an **eighth (aṭṭhamam)** > **existence (bhavaṃ)** they’ll not **seize (ādiyanti)**. Yea, in the Saṅgha is this glorious gem: By virtue of this truth, may blessing be! (Mills) > > Those who have seen clearly the noble truths well-taught by the one of > deep discernment — regardless of what [later] might make them heedless > — will come to no **eighth state of becoming**. This, too, is an > exquisite treasure in the Sangha. By this truth may there be > well-being. (Thanissaro) > > Those who realized the Noble Truths well taught by him who is profound > in wisdom (the Buddha), even though they may be exceedingly heedless, > they will not **take an eighth existence** (in the realm of sense > spheres). This precious jewel is the Sangha. By this (asseveration of > the) truth may there be happiness. (Piyadassi) What is meant here by an "eighth grasping, seizing or taking up (ādiyati) of becoming/existence (bhava)"?