Final answer:
Before Banda Singh's departure to Punjab, he was given a Nishan Sahib and Nagara as emblems of temporal authority, symbolizing sovereignty, spiritual presence, and military power.
Step-by-step explanation:
The emblems of temporal authority bestowed upon Banda Singh before his departure to Punjab were a Nishan Sahib (Flag) and a Nagara (Drum). These symbols were significant as they represented sovereignty and the right to rule. The Nishan Sahib is a Sikh flag that signifies the presence of the Guru and thus grants spiritual authority, while the Nagara, a type of drum, is used to gather people and signal important events, symbolizing temporal power and military might.