What nuance do later Hanafi commentaries give for voluntary hady timing?

Bab al-Hady — Sacrificial Offerings, Eligibility, Slaughter and Handling

• Voluntary hady must be slaughtered outside the Haram
• Tamattu and qiran offerings may be slaughtered any day
• No offering has a place requirement
• An authoritative view permits voluntary hady before the sacrifice days once it reaches the Haram