Arghya is offered to the Sun God in the morning and evening, during this time Surya Ashtakam Mantra should be used while saluting the Sun God, this pleases the Sun God and we receive his blessings.
Aadidev namastubhyn praseed mam bhaaskar ॥
divaakar namastubhyn prabhaakar namosstu te ॥1॥
saptaashvarathamaarooḍhn prachaṇaḍan kashyapaatmajam ॥
shvetapadmadharn devn tn sooryn praṇaamaamyaham ॥2॥
lohitn rathamaarooḍhn sarvalokapitaamaham ॥
mahaapaapaharn devn tn sooryn praṇaamaamyaham ॥3॥
traiguṇayn ch mahaashoorn brahmaviṣṇaumaheshvaram ॥
mahaapaapaharn devn tn sooryn praṇaamaamyaham ॥4॥
brinhitn tejahpux~njn ch vaayumaakaashamev ch ॥
prabhun ch sarvalokaanaan tn sooryn praṇaamaamyaham ॥5॥
bandhookapuṣpasnkaashn haarakuṇaḍaalabhooṣitam ॥
ekachakradharn devn tn sooryn praṇaamaamyaham ॥6॥
tn sooryn jagatkartaarn mahaatejahpradeepanam ॥
mahaapaapaharn devn tn sooryn praṇaamaamyaham ॥7॥
tn sooryn jagataan naathn gyaanavigyaanamokṣadam ॥
mahaapaapaharn devn tn sooryn praṇaamaamyaham ॥9॥
iti shreeshivaproktn sooryaaṣṭakn sampoorṇaam ॥
sooryaaṣṭakn paṭhennityn grahapeeḍaa praṇaashanam ॥10॥
aputro labhate putrn daaridro dhanavaan bhavet ॥
amiṣn madhupaann ch yah karoti raverdine ॥11॥
saptajanmabhavet rogi janmajanm daridrataa ॥
stree-tail-madhu-maansaani ye tyajanti raverdine ॥12॥
n vyaadhi shok daaridryn soory lokn ch gachchhati ॥